/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.sqlserver;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.HistoryConfigInfoMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

/**
 * The mysql implementation of HistoryConfigInfoMapper.
 *
 * @author hyx
 **/

public class HistoryConfigInfoMapperBySqlserver extends AbstractMapperBySqlserver implements HistoryConfigInfoMapper {

    @Override
    public MapperResult removeConfigHistory(MapperContext context) {
        String sql = "WITH RowsToDelete AS ( "
                + "SELECT TOP (?) * FROM his_config_info WHERE gmt_modified < ? ORDER BY gmt_modified ASC) "
                + "DELETE FROM his_config_info WHERE id IN (SELECT id FROM RowsToDelete)";
        return new MapperResult(sql, CollectionUtils.list(
                context.getWhereParameter(FieldConstant.LIMIT_SIZE),
                context.getWhereParameter(FieldConstant.START_TIME)
        ));
    }

    @Override
    public MapperResult pageFindConfigHistoryFetchRows(MapperContext context) {
        String sql = "SELECT nid, data_id, group_id, tenant_id, app_name, src_ip, src_user, op_type, gmt_create, gmt_modified "
                + "FROM his_config_info "
                + "WHERE data_id = ? AND group_id = ? AND tenant_id = ? "
                + "ORDER BY nid DESC "
                + "OFFSET " + context.getStartRow() + " ROWS FETCH NEXT " + context.getPageSize() + " ROWS ONLY";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.DATA_ID),
                context.getWhereParameter(FieldConstant.GROUP_ID),
                context.getWhereParameter(FieldConstant.TENANT_ID)));
    }

    @Override
    public String getDataSource() {
        return DataSourceConstant.SQLSERVER;
    }
}
